|Message: Volume information in UserStackingAction?||Not Logged In (login)|
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Dear all, I'd like to use the GetLogicalVolumeAtVertex method to filter the generated secondaries in my geant4 simulation by calling it in the ClassifyNewTrack method of my UserStackingAction class. While I do obtain sensible values for aTrack->GetPosition(), when I try to use GetLogicalVolumeAtVertex (or GetVolume, for that matter) I get a NULL pointer object. I noticed a similar problem in post 100 regarding a custom trajectory class. Does this mean that ClassifyNewTrack is called before the volume information is available as well? If so, is there another simple way to kill secondary tracks originating in a given volume? Many thanks in advance, Daniel Greiner
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